21720312

素因数分解:

$2^3\times 3^5\times {\mathrm{11173}}^1$

素因数の和:11194

約数の個数: 48

約数和(自身を含む): 61010040

約数和(自身を除く): 39289728

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 243, 324, 486, 648, 972, 1944, 11173, 22346, 33519, 44692, 67038, 89384, 100557, 134076, 201114, 268152, 301671, 402228, 603342, 804456, 905013, 1206684, 1810026, 2413368, 2715039, 3620052, 5430078, 7240104, 10860156, 21720312]

約数ペア:

[(1, 21720312), (2, 10860156), (3, 7240104), (4, 5430078), (6, 3620052), (8, 2715039), (9, 2413368), (12, 1810026), (18, 1206684), (24, 905013), (27, 804456), (36, 603342), (54, 402228), (72, 301671), (81, 268152), (108, 201114), (162, 134076), (216, 100557), (243, 89384), (324, 67038), (486, 44692), (648, 33519), (972, 22346), (1944, 11173)]